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The resistances in the two arms of the meter bridge are 5Ω and RΩ, respectively. When the resistance R is shunted with an equal resistance, the new balance point is at 1.6 l1. The resistance ‘R’ is :
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- 10Ω
- 15Ω
- 20Ω
- 25Ω
Correct Option: B
This is a balanced wheatstone bridge condition,
⇒R = 15 Ω